fall off
decrease in quantity or quality 數(shù)量或質(zhì)量下降
Attendance at my lectures has fallen off considerably. 聽(tīng)我講課的人已大大減少了.
It used to be my favourite restaurant but the standard of cooking has fallen off recently. 那是我以前最喜歡的飯館, 但近來(lái)烹飪水平已大不如前了.